Kelly Osbourne thinks it's old fashioned to ask a girl's parents for permission before getting engaged.

The stars had secretly been engaged for some time, which didn’t go down well with her pals.

“That was the biggest secret I’ve ever kept in my life and I’m rubbish at keeping secrets,” she laughed to Australian radio hosts Kyle and Jackie O.

“But watching my friends go through what they’ve gone through and even my brother when he got married, people tend to make marriage about everyone else except for the people getting married. I have friends that are still mad at me ‘cause I didn’t tell them!”